Cited by 73Functional Brain Connectivity StudiesSchizophrenia research and treatmentMental Health and Psychiatry

Impaired insight into illness and cognitive insight in schizophrenia spectrum disorders: Resting state functional connectivity

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Gerretsen, Philip, Menon, Mahesh, Mamo, David C., Fervaha, Gagan, Remington, Gary, Pollock, Bruce G., Graff-Guerrero, Ariel·2014·Schizophrenia Research

Abstract

Background Impaired insight into illness (clinical insight) in schizophrenia has negative effects on treatment adherence and clinical outcomes. Schizophrenia is described as a disorder of disrupted brain connectivity. In line with this concept, resting state networks (RSNs) appear differentially affected in persons with schizophrenia. Therefore, impaired clinical, or the related construct of cognitive insight (which posits that impaired clinical insight is a function of metacognitive deficits), may reflect alterations in RSN functional connectivity (fc). Based on our previous research, which showed that impaired insight into illness was associated with increased left hemisphere volume relative to right, we hypothesized that impaired clinical insight would be associated with increased connectivity in the DMN with specific left hemisphere brain regions.Methods Resting state MRI scans were acquired for participants with schizophrenia or schizoaffective disorder (n=20). Seed-to-voxel and ROI-to-ROI fc analyses were performed using the CONN-fMRI fc toolbox v13 for established RSNs. Clinical and cognitive insight were measured with the Schedule for the Assessment of Insight-Expanded Version and Beck Cognitive Insight Scale, respectively, and included as the regressors in fc analyses.Results As hypothesized, impaired clinical insight was associated with increased connectivity in the default mode network (DMN) with the left angular gyrus, and also in the self-referential network (SRN) with the left insula. Cognitive insight was associated with increased connectivity in the dorsal attention network (DAN) with the right inferior frontal cortex (IFC) and left anterior cingulate cortex (ACC).Conclusion Increased connectivity in DMN and SRN with the left angular gyrus and insula, respectively, may represent neural correlates of impaired clinical insight in schizophrenia spectrum disorders, and is consistent with the literature attributing impaired insight to left hemisphere dominance. Increased connectivity in the DAN with the IFC and ACC in relation to cognitive insight may facilitate enhanced mental flexibility in this sample.

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Authors
Gerretsen, P., Menon, M., Mamo, D. C., Fervaha, G., Remington, G., Pollock, B. G., & Graff-Guerrero, A.
Affiliations
Centre for Addiction and Mental Health (CA)
Venue
Schizophrenia Research
Publisher
Elsevier BV
Published
2014-12
Volume
160
Issue
1-3
Pages
43-50
ISSN
0920-9964 (ISSN-L)
OpenAlex
W2038709693
Cited by
73
References
94
Citations by year
2026: 5 · 2025: 5 · 2024: 4 · 2023: 6 · 2022: 4 · 2021: 5 · 2020: 7 · 2019: 7 · 2018: 7 · 2017: 12 · 2016: 6 · 2015: 5
FWCI
4.28
Type
journal article
Language
en
Open access
Locations
  • Schizophrenia Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (R01MH084886)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Psychiatry and Mental health › Schizophrenia research and treatment
  • Social Sciences › Arts and Humanities › Philosophy › Mental Health and Psychiatry
Keywords
clinical insight, cognitive insight
MeSH terms
Adolescent, Adult, Aged, Agnosia, Awareness, Brain, Brain Mapping, Cognition, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Neural Pathways, Psychotic Disorders, Schizophrenia, Schizophrenic Psychology, Young Adult

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